boratabenzene
{{Chembox
|ImageFile = Boratabenzene.png
|IUPACName = Boranuidabenzene
|Section1={{Chembox Identifiers
|SMILES = [BH-]=1CC=CC=C1
|StdInChI=1S/C5H6B/c1-2-4-6-5-3-1/h1-3,6H,4H2/q-1
|StdInChIKey = QPSALOYQXJTXAR-UHFFFAOYSA-N
|CASNo = 55926-39-1
|CASNo_Ref = {{cascite|correct|CAS}}
}}
|Section2={{Chembox Properties
| Formula_Charge = −
|C=5|H=6|B=1
}}
}}
File:Structure of Rh(C8H12)(C5H5BH) (OZUFAR).pngBoratabenzene is the heteroaromatic anion with the formula [C5H5BH]−. Derivatives of boratabenzene are ligands akin to cyclopentadienyl anion. sandwich or half-sandwich type complexes of many transition metals have been reported.{{cite journal |doi=10.1016/j.ccr.2005.02.016|title=Metallocene and Related Catalysts for Olefin, Alkyne and Silane Dimerization and Oligomerization|year=2006|last1=Janiak|first1=Christoph|journal=Coordination Chemistry Reviews|volume=250|issue=1–2|pages=66–94}}{{cite journal |doi=10.1016/j.ccr.2015.07.014|title=Boratabenzene Rare-earth Metal Complexes|year=2016|last1=Cui|first1=Peng|last2=Chen|first2=Yaofeng|journal=Coordination Chemistry Reviews|volume=314|pages=2–13}} Electronically related heterocycles are adducts of borabenzene. The adduct C5H5B·pyridine exhibits properties of boratabenzene anion, i.e., it has the character C5H5B−-N+C5H5.
